AlreadyKnown

AlreadyKnown - Colorizes the item that is already known in some default frames.

This is really simple one and I want to keep it as is because I like the addon that I can forget about it.
It basically tries to indicate the "Already Known" string in a tooltip without mouse hovering.
"in some default frames" means the frames that you can see a red (unusable) icon in it (Beside GuildBank and GuildRewards).
If you find other frames that need to be supported, please let me know.

Any thoughts, ideas and surely any helps are welcome. Please leave your comments.

It would help tons if AlreadyKnown featured guild bank support! Some guild banks have a glyph/battle pet/recipes/whatnot tab and it would be handy if the player could see what they know/don't know before asking an officer for XYZ item from the GB.

Unless I'm horribly mistaken AlreadyKnown doesn't support GBs; or even if it does, for some weird reason it doesn't work for me

Originally, this addon had supported GuildBank (and GuildRewards). But I made a border that it should support the frames that you can see a red icon (unusable) in it.
I had tried even to colorize the unusable items in GuildBack to keep consistency, but it requires another tooltip scanning. (No API like for merchants). Maybe I have to try it again someday.

For now, I'll re-upload the version that supports GuildBank and GuildRewards. It was always there anyway.